Bug 2293262 (CVE-2021-47573)

Summary:	CVE-2021-47573 kernel: xen/blkfront: harden blkfront against event channel storms
Product:	[Other] Security Response	Reporter:	Avinash Hanwate <ahanwate>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	dfreiber, drow, jburrell, mbenatto, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 4.4.296, kernel 4.9.294, kernel 4.14.259, kernel 4.19.222, kernel 5.4.168, kernel 5.10.88, kernel 5.15.11, kernel 5.16	Doc Type:	If docs needed, set a value
Doc Text:	[REJECTED CVE] The Xen blkfront driver in the Linux kernel was vulnerable to attacks via excessive event channels sent by the backend. This could lead to event channel storms.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2293209

Description Avinash Hanwate 2024-06-20 11:12:40 UTC

In the Linux kernel, the following vulnerability has been resolved:

xen/blkfront: harden blkfront against event channel storms

The Linux kernel CVE team has assigned CVE-2021-47573 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024061911-CVE-2021-47573-5c43@gregkh/T

Comment 10 TEJ RATHI 2024-11-26 12:39:36 UTC

This CVE has been rejected upstream:
https://lore.kernel.org/linux-cve-announce/2024062049-REJECTED-ff01@gregkh/